Mo' money, for once, isn't bringing mo' problems to San Francisco — at least when it comes to the anonymous man leaving cash around the city.

Last week, someone operating the Twitter handle @HiddenCash started sharing clues and images of places around San Francisco where he had hidden envelopes stuffed with cash. There hasn't been much of an explanation behind the scavenger hunt; the anonymous cash man wanted only one thing: for those who find the envelopes to pay it forward.

“I’m in that 1% that some people loathe, but rather than hating people who are successful, my point would be to encourage people who have been successful to give back a little bit more," the anonymous gifter, who claims to be a successful real-estate mogul, told ABC News.

It appears as if San Franciscans are taking his direction to heart.

It's still unclear who is behind the @HiddenCash experiment, but the account has more than 100,000 followers, and those finding the cash are beginning to use the hashtag #PayItForward along with their tweets.

Alexzandra Etherton, an author based in San Francisco, found an envelope outside the 9th Circuit Court of Appeals building near City Hall. Etherton plans to use some of the money to buy her own books to donate in the city, and she gave the rest to those working at a nearby coffee shop where she first read the clue.

Samantha Kane, a freelance conference and event planner, heard about the scavenger hunt when her stepfather sent her an article about it. When she stumbled upon an envelope in the city's Dolores Park on Sunday, Kane took her stepfather out for dinner with the $100 she found.

Leo Sunga, a lifelong San Francisco resident, found $100 after following a Twitter clue early Sunday morning while getting ready for church. He donated all the money to St. Anne's, a Catholic church in San Francisco's Inner Sunset neighborhood immediately afterward. Later that day, Sunga said he found another envelope, but decided to leave it for a different hunter to find.

"I felt like I'd been blessed enough that day," he told Mashable.

While the scavenger hunt appears to be encouraging a mad dash toward envelopes all over the city (multiple cash finders admitted to running after envelopes), it doesn't seem to be driving greed. Matt Burkert, a civil engineer based in San Francisco, has eagerly searched for envelopes shoulder-to-shoulder with other residents on multiple occasions.

In those instances, Burkert said those who missed out on the envelope weren't bitter, but instead celebrated those who did find it.

"There's definitely a lot of camaraderie," said Burkert, who did claim one $100 envelope on Sunday. "I think people know it's not about the money; it's more about the adventure ... It's all about paying it forward."

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